cores: just set to 2 on unknown platforms (William Casarin)

android: add missing headers (William Casarin)

random: add getrandom fallback for android (William Casarin)

filter: make sure clone copies metadata (William Casarin)

filter: make sure to return clone errors (William Casarin)

filter: add ndb_filter_clone (William Casarin)

filter: use relative data offsets for easy cloning (William Casarin)

filter: add ndb_filter_end (William Casarin)

query: include note size in query results (William Casarin)

pushed to nostrdb:refs/heads/master

http://git.jb55.com/nostrdb/commit/827f876c7c634406f257633eee480fc489ce38a0.html